INSERT BEARING UNITS The contents of this catalog are subject to change without prior notice. Every possible effort has been made to ensure that the data herein is correct; however, JTEKT cannot assume responsibility for any errors or omissions. INSERT BEARING UNITS Reproduction of this catalog without written consent is strictly prohibited.

Technical section Pillow block type Square-flanged type Rhombic-flanged type Round-flanged type with spigot joint Pressed steel housing type Take-up type Cartridge type Hanger type Rubber clamping ring/ anti vibration ring 5 Machining dimensions of holes for housing dowel pins ... 262 6 Shaft tolerances (deviation from nominal dimensions) ... 264 Insert bearings for units Supplementary table Supplementary table

INSERT BEARING UNITS

Publication of New Insert Bearing Units Catalog In recent years, needs in industrial world for machineries and equipment highly developed in all aspects have been increased more than ever. Therefore, high technology covering from superior technical advantages including longer service life and maintenance free to higher reliability even under extraordinary conditions such as high and low temperatures and rotation at a high speed is required for insert bearing units. This catalog completely includes results of technical examinations and abundant research and development. In the first half of this...

Insert Bearing Units 13.3 Dustproof and waterproof performance ... 65 7 Allowable rotational speed

1 Structure and features Koyo Insert Bearing Units are highly precise bearing units comprising grease sealed deep groove ball bearings and housings in various forms. The insert bearing units allow easy handling and installation by followings: direct installation to machines and equipment with some bolts, self-aligning, and greasing. Grease hole 1.1 Structure Koyo Insert Bearing Unit comprises the insert bearing for unit with spherical outside surface and the housing with spherical bearing seat (Fig. 1.1). Grease nipple Outer ring with spherical outside surface Flinger (Slinger) Oil seal Ball...

1.2 Features Koyo Insert Bearing Units, having many features, are available in various types. Select the bearing unit optimal for your purpose among the types with unique features. 1 Supreme load capacity and accuracy Koyo Insert Bearings for unit, featuring the internal structure identical to single row deep groove ball bearings, bear axial load in both directions, as well as great radial load. The tolerance is equal to that of an standard bearing. They feature high rotation accuracy and high speed rotation. 2 Rational self aligning mechanism and optimal fit Koyo Insert Bearing Units have self...

4 Simple greasing Because of the grease nipple on the housing of Koyo Insert Bearing Unit, fresh grease can be easily supplied to the bearing being operated. If the bearing is used in severe environments that are exposed to many dusts or high humidity or that is high temperture, supply fresh grease at a regular interval. Then, the lubrication status of the bearing is kept to the best, and the service life of the bearing can be extended. When greasing to the bearing unit with the centralized lubricating system, use the socket for lubricating installed to the grease nipple tapped hole on the housing....

2 Unit number Nominal number of Koyo Insert Bearing Unit conform to JIS B1557, and comprise the bearing unit type number (comprising bearing type code and housing type code), diameter series code, bore dia. number, supplementary code, and special code. Nominal bearing number Nominal housing number Nominal bearing number UK209+H309X Nominal housing number P209JE1 Nominal pressed steel cover number (Through type) C-9x40 (Closed type) D-9 Nominal bearing number Nominal housing number Nominal cast iron cover number Housing special code (Table 2.8) Bearing special code (Table 2.7) Supplementaly code...

Diameter series code For light duty For medium duty For medium duty For heavy duty Diameter series code Details Nominal bearing bore dia. 8 mm Nominal bearing bore dia. 10 mm Nominal bearing bore dia. 12 mm Nominal bearing bore dia. 15 mm Nominal bearing bore dia. 17 mm (Bore dia. No.) × 5 = Nominal bearing bore dia. (mm) − (bore dia. No.) /16 = nominal bearing bore dia. (inch) (in this case, 8/16 = 1/2 inch = 12.7 mm) Item Grease Sealing Device Fitting code Fitting code Tolerance class of spherical bore of the housing is J7 (not shown on the bearing that the spherical bore diameter exceeds 120...

Table 2.8 Item Grease Nipple Thread Bore dia. Grease Nipple Thread Bore Position Grease Nipple Housing special code Details As shown in dimensional table PT1/8 tube thread PF1/8 tube thread PT1/4 tube thread PF1/4 tube thread As shown in dimensional table Right Left 45º 30º Both right and left Standard type Pressed steel cover mounting groove Cast iron cover mounting groove (diameter series 2, X, 3) Non-lubricating type Gray iron casting (FC200) or cold-reduced carbon steel sheets and strips (SPCC) Compact type is made of zinc alloy die-cast (ZDC2) Small stainless series is made of stainless...

3 Types 3.1 Type list Koyo Insert Bearing Units are available in various types. Table 3.1 Type 1 Pillow block type (1) Standard Table 3.1 and Table 3.2 show the types of Koyo Insert Bearing Units and insert bearing for unit. Koyo Insert Bearing Units types Bearing bore dia. Surface (fixing to shaft) Type code Dimension table Cylindrical bore (with set screws) Cylindrical bore (with eccentric locking collar) Tapered bore (with adapter) Cylindrical bore (with set screws) Tapered bore (2) Thick section type (with adapter) Cylindrical bore (with set screws) (4) Higher centerheight type Cylindrical...

Koyo Insert Bearing Units types (continued) Bearing bore dia. Surface (fixing to shaft) Type 6 Take-up type Type code Dimension table Cylindrical bore (with set screws) Tapered bore (with adapter) Cylindrical bore (with set screws) (3) Section steel frame type Cylindrical bore (with set screws) (4) Channel steel frame type Cylindrical bore (with set screws) UCTL UCTU (5) Pressed steel frame type Cylindrical bore (with set screws) Cylindrical bore (with set screws) Tapered bore (with adapter) Cylindrical bore (with set screws) 9 Rubber clamping ring type Cylindrical bore (with set screws) SBNPTH...